Refrigerator



FIG. 1 is a front perspective view of a refrigerator showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines illustrating portions of the refrigerator form no part of the claimed design. The dot dash lines in the figures represent an unclaimed boundary line and form no part of the claimed design. 

CLAIM The ornamental design for a refrigerator, as shown and described. 